Other map sowing the locator of the Municipality of San Sebastián del Oeste in Jalisco state.

San Sebastián del Oeste (Spanish(help·info)) is a town and municipality, located on the western part of Jalisco state, Mexico, between 20°39’45’’ - 21°02’30’’ N and 104°35’00’’ - 104°51’00’’ W, at a height of 1,480 metres (4,856 ft).

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The municipality of San Sebastián del Oeste borders the state of Nayarit to the north; to the south, the municipality of Mascota; to the east, the municipalities of Guachinango and Mascota; and to the west, Puerto Vallarta.

San Sebastián was founded as a mining town in 1605, during the early Spanish colonial Viceroyalty of New Spain period. Gold, silver and lead were mined in the area. More than 25 mines and a number of foundries were established by 1785.

San Sebastián del Oeste is a designated Pueblos Mágicos, one of the towns maintaining their historical character and promoted by the federal government as tourism destinations. It also receives tourists visiting nearby Puerto Vallarta on the coast to the west. Recent road improvements reduced transit time from Puerto Vallarta to under 2 hours.

Many structures in the city and municipality were built of cut stone and/or adobe in the 19th and earlier centuries, and remain unchanged. Some old haciendas in the municipality have been purchased and restored in recent decades.